Some things are not mutually exclusive

I understand how the show tries to explain it but it doesn’t sit well with me and the whole message of the show

Just because I’m relieved you didn’t cheat on me 20 years ago it doesn’t mean I’m glad you went through a horrible ordeal, and then the show just decides to end, magically reconciles with her son and the husband is the final villain, haven’t read the book so I don’t know if it’s fleshed out better there but yeah, felt kinda rushed